Quaternary sectional helmet with planar springs



FIG. 1 is a perspective view showing our new design for a quaternary sectional helmet with planar springs;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is an underside view of the top elevation thereof.

In the drawings, the broken lines showing portions of a helmet depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a quaternary sectional helmet with planar springs, as shown. 